If I told you I would have to Kill you, easgach 1
What he said - totally classified, compartmentalised, and on a need to know basis.
Seriously though, my five wouldn't be your five, or anyone elses five, so think about these....
Wild waters for Broons - bumbles, hedgehogs, daddies, trad wets
Rainbows - cats, buzzers, bobs bits / shipman style dries, damsels
Rivers - klinks, spiders, dirty dusters, f-flies, hares ear floating or sinking
Start with your own variations of that lot and you are on The Path to Enlightenment.